2854778839 has 16 divisors (see below), whose sum is σ = 3339256320. Its totient is φ = 2411660160.

The previous prime is 2854778831. The next prime is 2854778851. The reversal of 2854778839 is 9388774582.

It is a cyclic number.

It is not a de Polignac number, because 2854778839 - 2³ = 2854778831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2854778831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81849 + ... + 111394.

It is an arithmetic number, because the mean of its divisors is an integer number (208703520).

Almost surely, 2^2854778839 is an apocalyptic number.

2854778839 is a deficient number, since it is larger than the sum of its proper divisors (484477481).

2854778839 is a wasteful number, since it uses less digits than its factorization.

2854778839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193350.

The product of its digits is 27095040, while the sum is 61.

The square root of 2854778839 is about 53430.1304415402. The cubic root of 2854778839 is about 1418.5919453547.

The spelling of 2854778839 in words is "two billion, eight hundred fifty-four million, seven hundred seventy-eight thousand, eight hundred thirty-nine".